Description: The aim of the investigation was to study the effect of two growth regulators - the commercial chemical Charkor and IBA auxin on the induction of root formation when planting non-rooted in vitro propagated plants of GF 677 rootstock and kiwi. Two factors were studied - the duration of treatment with the growth regulator and stem basis processing. Very good root formation of GF 677 plants was obtained after treatment with both substances. More vigorous initial growth was established after treatment of the plants with Charkor without cutting the stem basis. The plants treated with IBA achieved the highest percentage of rhizogenesis and active growth after dipping them in the growth regulator for 30 sec. In kiwi plants, better root formation and development was obtained after treatment with IBA in comparison with those dipped in Charkor

Remarks: Proceedings of the XI National Conference on Plant Physiology, 18-19 november 2009, Sofia, Bulgaria